Improvement in fire-pots for stoves



1, Fire-Pnt for Stoves.

SPEB.

Patented May 18, 875.

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THE GRAPHIC COPPI OTO -LITPASQ B; 4.1 PARK PLACE., NAY.

"UNITED STATES PATENT Ormea.

JAMES SPEAR, OAF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN FIRE-POTS FOR STOVES.

Specification formingpart ofA Letters Patent No. 163,418, dated May 18, 1875; application filed April 7, 15575.`

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To all whom it may concern:

Be it known that I, JAMES SPEAR, of 1016 Market street, Philadelphia, Pennsylvania, have invented an Improvement in Stoves, of which the following is a specication:

The nature of my invention relates to thel improvement of fire-pots for base-burning and anti-clinker stoves 5 and it relates more particularly to that class of fire-pots which are suspended from the upper flange, allowing the nre-pot to hang in the air-space insidel the walls of the stove, and free from the grate, forming an anti-clinker opening between the lower end of the lire-pot and upper surface of the grate.

Gast-iron cylinders, supported from the top and free from the grate, frequently crack around the center, where the heat is greatest, with an annular fracture, and the lower end drops down on thegrate, lilling up the clinkercleaning opening` between the grate and lirepot, and rendering the stove useless. This crack frequently occurs when the stove has been but a few weeks in use, and the thickness of the iron does not seem to be a preventive against injury from this cause. Sometimes the grate is supported from the suspended fire-pot, and then when a crack occurs bothfall together into the ash-pit.

My invention consists in the combination, with a suspended fire-pot of cast-iron or similar material easily cracked by heat, of bolts, which are attached by means of lugs or hooks to the bottom edge of the fire-pot below lthe point of annular fracture, and which extend to the top ange, so as to brace securely the top and bottom edges of the lire-pot, and hold it in shape when a partial or annular fracture occurs.

It will be observed that when the fire-pot cracks the bolts will support the discharge end, so that itcannot drop down on the grate, and it will still remain serviceable.

I also make the said suspended fire-pot with a series of rings, having air-spaces between them, and support the rings in the same manner by bolts passing from the upper flange to lugs on the lowest section.

Figure 1 is a vertical section through the stove. Fig. 2 is a section through a fire-pot made in rings.

A is the body; B, the magazine 5 C, the upper tier of mica lights in hinged doors 5 D, the lower tier of mica lights in doors, forl illumination and observation of the state of the fire at the discharge end of the fire-pot, :and for the insertion of a poker for the removal of clinkers from the surface of the grate. E is the base or ash-pit, in which is the ash-pan F, into which clinkers and refuse fall over the edge of the ygrate H. The conical deliectorK gives direction to the falling clinkers. The grate H turns on a center-pin in the cross-bar n, which bar is supported from the sides of the ash-pit. The rear portion of the grate is attached to a rod, R, which passes through the frnt lug r1, and through a slidemz, to the outside of the stove. By means of this rod the grate can be vibrated, and the sliding part p withdrawn to dump the re. S is the fire-pot suspended by a liange at its upper edge within the section M of the wall of the stove. The lower edge is indented or notched, and hangs free from the casing of the stove, and above the grate, leaving a clinkercleaning opening, P, between the grate and nre-pot.. Bolts W pass through the upper flange s1, and also through the lugs s2 near the bottom, whereby the fire-pot remains serviceable in the event of the end cracking off. These bolts may be hooked under the bottom of the lire-pot instead of to the lugs s2. This, however, is not quite so cgnvenient as that previously described.

In Fig. 2 is seen a modification of the same invention. The lire-pot is here shown made in rings having openings for air between the rings. This form of fire-pot permits the various parts of the fire-pot to expand, according to the temperature to which each is heated, and the air passing in between the rings will ignite theV unconsumed gases, and insure a more perfect combustion, and when any ring is broken, it may, if desired, be replaced by another, with less expense than the substituting of a new hre-pot.

I am aware that cast-iron stoves, in which the outside wall formed the fire-chamber, have been made in rings or sections resting on the base of the stove; also, magazines have been madein rings 5 also, detachable ends have been bolted to magazines and suspended fire-pots. Such 1 do not, broadly, claim.

I claiml. The ire-pot S, suspended, by the flange si, from the section D of the Wall of the stove, in combination with the supporting-bolts W, connecting the flange s1 With the lugs s2, for the purpose of supporting the lower section of the fire-pot when cracked off, substantially as herein described.

2. The suspended fire-pot S, made in rings, and suspended by the ange s1 from the section D of the Wall of the stove, in combination with the supporting-bolts W connecting the flange s1 with the lugs s2, substantially as herein described.

3. The suspended fire-pot S, having its dis-- 

